Cita APA

Yates, C. S. J. (1992). May I help you: English in tourism. New York: Prentice-Hall.

Citación estilo Chicago

Yates, Christopher St J. May I Help You: English in Tourism. New York: Prentice-Hall, 1992.

Cita MLA

Yates, Christopher St J. May I Help You: English in Tourism. New York: Prentice-Hall, 1992.